[Freeswitch-users] mod_h323: call deferred due to unsuccessfull dns lookup

[Nikolay Kondratyev]

Ok, thanks for the help.
I'll try and let you know what I'll get.
Thanks again,
Nikolay. 

> -----Original Message-----
> From: freeswitch-users-bounces at lists.freeswitch.org 
> [mailto:freeswitch-users-bounces at lists.freeswitch.org] On 
> Behalf Of Georgiewskiy Yuriy
> Sent: Wednesday, September 01, 2010 3:10 PM
> To: FreeSWITCH Users Help
> Subject: Re: [Freeswitch-users] mod_h323: call deferred due 
> to unsuccessfull dns lookup
> 
> On 2010-09-01 13:46 +0400, Nikolay Kondratyev wrote 
> 'FreeSWITCH Users Help':
> 
> NK>Hi all,
> NK>i found the following problem with mod_h323:
> NK>When i make outgoing call via h323, there is a 10 seconds 
> delay before the call is sent out, via h323. 
> NK>I believe it happens because fs tries to resolve 
> _h323cs._tcp.172.23.14.2 srv record.
> NK>Here is a fragment of a log file:
> NK> 
> NK>2010-09-01 12:02:17.144778 [DEBUG] mod_h323.cpp:1564 
> NK>======>create_outgoing_channel DST NUMBER = 5840 at 172.23.14.2
> NK>2010-09-01 12:02:17.144778 [DEBUG] mod_h323.cpp:1532 
> NK>======>FSH323EndPoint::FSMakeCall DST NUMBER = 5840 at 172.23.14.2 
> NK>[FSH323EndPoint]
> NK>2010-09-01 12:02:17.144778 [DEBUG] mod_h323.cpp:1544 ----> Using 
> NK>172.23.22.49 for outbound call
> NK>2010-09-01 12:02:17.144778 [DEBUG] pdns.cxx:498 SRV Lookup 
> 172.23.14.2 service _h323cs._tcp.
> NK>2010-09-01 12:02:27.402216 [DEBUG] pdns.cxx:471 SRV Lookup Fail no 
> NK>domain h323:5840 at 172.23.14.2
> NK>2010-09-01 12:02:27.402216 [DEBUG] h323ep.cxx:2353 DNS SRV Cannot 
> NK>resolve remote party 5840 at 172.23.14.2
> NK>2010-09-01 12:02:27.402216 [DEBUG] h323ep.cxx:2141 Making call to: 
> NK>5840 at 172.23.14.2
> NK>
> NK>And i can also see this looking into the network trace 
> with wireshark.
> NK>So one can see a 10 seconds delay due to failed dns lookup.
> NK> 
> NK>I use FS 1.0.6. My h323.conf and dialplan are just like those 
> NK>described in the wiki http://wiki.freeswitch.org/wiki/Mod_h323
> NK> 
> NK>As far as i understand, if ip address (not name) is 
> specified, srv lookup should not be performed. Is it correct?
> NK>What could be done to make FS not to lookup this srv 
> record (when ip address, not name, is specified)?
> NK> 
> NK>Thanks in advance,
> NK>Nikolay.
> 
> I think this is library issue, as tempollary solution try 
> rebuild libpt with --disable-resolver option then rebuild 
> h323plus and mod_h323.
> 
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